@font-face {
            font-family: 'Inter';
            src: url('fonts/google/inter/Inter-300.ttf') format('truetype'),
                url('https://fonts.gstatic.com/s/inter/v20/UcCO3FwrK3iLTeHuS_nVMrMxCp50SjIw2boKoduKmMEVuOKfMZg.ttf') format('truetype');
            font-weight: 300;
            font-style: normal;
            font-display: swap;
        }

        @font-face {
            font-family: 'Inter';
            src: url('fonts/google/inter/Inter-400.ttf') format('truetype'),
                url('https://fonts.gstatic.com/s/inter/v20/UcCO3FwrK3iLTeHuS_nVMrMxCp50SjIw2boKoduKmMEVuLyfMZg.ttf') format('truetype');
            font-weight: 400;
            font-style: normal;
            font-display: swap;
        }

        @font-face {
            font-family: 'Inter';
            src: url('fonts/google/inter/Inter-500.ttf') format('truetype'),
                url('https://fonts.gstatic.com/s/inter/v20/UcCO3FwrK3iLTeHuS_nVMrMxCp50SjIw2boKoduKmMEVuI6fMZg.ttf') format('truetype');
            font-weight: 500;
            font-style: normal;
            font-display: swap;
        }

        @font-face {
            font-family: 'Inter';
            src: url('fonts/google/inter/Inter-600.ttf') format('truetype'),
                url('https://fonts.gstatic.com/s/inter/v20/UcCO3FwrK3iLTeHuS_nVMrMxCp50SjIw2boKoduKmMEVuGKYMZg.ttf') format('truetype');
            font-weight: 600;
            font-style: normal;
            font-display: swap;
        }

        @font-face {
            font-family: 'Inter';
            src: url('fonts/google/inter/Inter-700.ttf') format('truetype'),
                url('https://fonts.gstatic.com/s/inter/v20/UcCO3FwrK3iLTeHuS_nVMrMxCp50SjIw2boKoduKmMEVuFuYMZg.ttf') format('truetype');
            font-weight: 700;
            font-style: normal;
            font-display: swap;
        }

        @font-face {
            font-family: 'JetBrains Mono';
            src: url('fonts/google/jetbrains-mono/JetBrainsMono-400.ttf') format('truetype'),
                url('https://fonts.gstatic.com/s/jetbrainsmono/v24/tDbY2o-flEEny0FZhsfKu5WU4zr3E_BX0PnT8RD8yKxjPQ.ttf') format('truetype');
            font-weight: 400;
            font-style: normal;
            font-display: swap;
        }

        @font-face {
            font-family: 'JetBrains Mono';
            src: url('fonts/google/jetbrains-mono/JetBrainsMono-500.ttf') format('truetype'),
                url('https://fonts.gstatic.com/s/jetbrainsmono/v24/tDbY2o-flEEny0FZhsfKu5WU4zr3E_BX0PnT8RD8-qxjPQ.ttf') format('truetype');
            font-weight: 500;
            font-style: normal;
            font-display: swap;
        }

        @font-face {
            font-family: 'OCR-A';
            src: url('fonts/OCR-A.ttf') format('truetype');
            font-weight: 400;
            font-style: normal;
            font-display: swap;
        }

        @font-face {
            font-family: 'OCR-B';
            src: url('fonts/OCR-B/OCR-B.ttf') format('truetype');
            font-weight: 400;
            font-style: normal;
            font-display: swap;
        }

        /* Prevent flash of unstyled content - apply system theme immediately */
        @media (prefers-color-scheme: light) {
            body:not([data-theme]) {
                --bg-primary: #ffffff;
                --bg-secondary: #f8fafc;
                --bg-tertiary: #f1f5f9;
                --bg-elevated: #ffffff;
                --bg-glass: rgba(248, 250, 252, 0.8);
                --text-primary: #0f172a;
                --text-secondary: #475569;
                --text-tertiary: #64748b;
                --text-inverse: #ffffff;
                --border-primary: #e2e8f0;
                --border-secondary: #cbd5e1;
                --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
                --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
                --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
                --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
            }
        }

        :root {
            /* Dark Theme (Primary) */
            --bg-primary: #0a0a0a;
            --bg-secondary: #1a1a1a;
            --bg-tertiary: #2a2a2a;
            --bg-elevated: #1f1f1f;
            --bg-glass: rgba(26, 26, 26, 0.8);

            --text-primary: #ffffff;
            --text-secondary: #a3a3a3;
            --text-tertiary: #737373;
            --text-inverse: #0a0a0a;

            --accent-primary: #3b82f6;
            --accent-primary-hover: #2563eb;
            --accent-secondary: #10b981;
            --accent-secondary-hover: #059669;
            --accent-tertiary: #10b981;
            --accent-tertiary-hover: #059669;

            --border-primary: #333333;
            --border-secondary: #404040;
            --border-focus: #3b82f6;

            --success: #22c55e;
            --warning: #f59e0b;
            --error: #ef4444;

            --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.25);
            --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -2px rgba(0, 0, 0, 0.25);
            --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.4), 0 4px 6px -4px rgba(0, 0, 0, 0.3);
            --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.4), 0 10px 10px -5px rgba(0, 0, 0, 0.2);

            --radius-xs: 4px;
            --radius-sm: 6px;
            --radius-md: 8px;
            --radius-lg: 12px;
            --radius-xl: 16px;
            --radius-2xl: 24px;

            --space-xs: 4px;
            --space-sm: 8px;
            --space-md: 16px;
            --space-lg: 24px;
            --space-xl: 32px;
            --space-2xl: 48px;
            --space-3xl: 64px;

            --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-bounce: 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55);

            --chevron-hover: var(--text-secondary);

            /* Slider track colors */
            --slider-track-fill: rgba(59, 130, 246, 0.5);
            --slider-track-bg: #2a2a2a;
        }

        [data-theme="light"] {
            --bg-primary: #ffffff;
            --bg-secondary: #f8fafc;
            --bg-tertiary: #f1f5f9;
            --bg-elevated: #ffffff;
            --bg-glass: rgba(248, 250, 252, 0.8);

            --text-primary: #0f172a;
            --text-secondary: #475569;
            --text-tertiary: #64748b;
            --text-inverse: #ffffff;

            --border-primary: #e2e8f0;
            --border-secondary: #cbd5e1;

            --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
            --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
            --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
            --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);

            /* Slider track colors for light theme */
            --slider-track-fill: rgba(59, 130, 246, 0.5);
            --slider-track-bg: #e2e8f0;
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            user-select: none;
            -webkit-user-select: none;
            cursor: default;
        }

        *::before,
        *::after {
            box-sizing: border-box;
        }

        /* Re-enable text selection for editable fields */
        input[type="text"],
        input[type="number"],
        input[type="email"],
        input[type="password"],
        input[type="search"],
        textarea,
        [contenteditable="true"] {
            user-select: text;
            -webkit-user-select: text;
            cursor: text;
        }

        /* Pointer cursor for interactive elements */
        button,
        [role="button"],
        select,
        a,
        label[for],
        .btn,
        .color-swatch-button,
        .paste-btn,
        .theme-toggle,
        .section-header,
        .modal-tab,
        .modal-close,
        .custom-select-trigger,
        .custom-option,
        .download-btn,
        .color-picker,
        input[type="checkbox"],
        input[type="radio"],
        input[type="range"] {
            cursor: pointer;
        }

        html {
            font-size: 16px;
            line-height: 1.6;
            scroll-behavior: smooth;
            height: 100%;
            overflow: hidden;
        }

        body {
            font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
            background: var(--bg-primary);
            color: var(--text-primary);
            height: 100%;
            overflow: hidden;
            transition: background-color var(--transition-smooth), color var(--transition-smooth);
            font-feature-settings: 'cv02', 'cv03', 'cv04', 'cv11';
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        /* Typography System */
        .text-display {
            font-size: 3rem;
            font-weight: 700;
            line-height: 1.1;
            letter-spacing: -0.025em;
        }

        .text-h1 {
            font-size: 2.25rem;
            font-weight: 600;
            line-height: 1.2;
            letter-spacing: -0.025em;
        }

        .text-h2 {
            font-size: 1.875rem;
            font-weight: 600;
            line-height: 1.3;
            letter-spacing: -0.025em;
        }

        .text-h3 {
            font-size: 1.5rem;
            font-weight: 600;
            line-height: 1.4;
            letter-spacing: -0.025em;
        }

        .text-h4 {
            font-size: 1.25rem;
            font-weight: 600;
            line-height: 1.4;
        }

        .text-body {
            font-size: 1rem;
            font-weight: 400;
            line-height: 1.6;
        }

        .text-small {
            font-size: 0.875rem;
            font-weight: 400;
            line-height: 1.5;
        }

        .text-xs {
            font-size: 0.75rem;
            font-weight: 400;
            line-height: 1.4;
        }

        .text-mono {
            font-family: 'JetBrains Mono', 'SF Mono', Consolas, monospace;
        }

        /* Layout System */
        .app-container {
            padding: var(--space-lg);
            height: 100vh;
            display: flex;
            flex-direction: column;
            overflow: hidden;
        }

        .app-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: var(--space-lg);
            padding-bottom: var(--space-sm);
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: var(--space-sm);
        }

        .app-title {
            display: flex;
            align-items: center;
            gap: var(--space-md);
        }

        .app-title-text {
            position: relative;
            cursor: pointer;
        }

        .app-version {
            position: absolute;
            top: 4px;
            right: -38px;
            font-size: 0.35em;
            font-weight: 400;
            color: var(--text-tertiary);
            opacity: 0;
            transform: translateY(4px);
            transition: all var(--transition-fast);
            pointer-events: none;
            background: var(--bg-elevated);
            padding: 1px 4px;
            border-radius: var(--radius-xs);
            border: 1px solid var(--border-primary);
            white-space: nowrap;
        }

        .app-title-text:hover .app-version {
            opacity: 1;
            transform: translateY(0);
        }

        .app-icon {
            width: 40px;
            height: 40px;
            border-radius: var(--radius-lg);
            display: flex;
            align-items: center;
            justify-content: center;
            overflow: hidden;
            cursor: pointer;
            transition: all var(--transition-fast);
            position: relative;
        }

        .app-icon:hover {
            transform: translateY(-2px) scale(1.05);
            box-shadow: var(--shadow-lg);
        }

        .app-icon:active {
            transform: translateY(0) scale(1.02);
            box-shadow: var(--shadow-md);
        }

        .app-icon svg {
            width: 100%;
            height: 100%;
            border-radius: var(--radius-lg);
            transition: all var(--transition-fast);
        }

        .theme-toggle {
            position: relative;
            background: var(--bg-tertiary);
            border: 1px solid var(--border-primary);
            border-radius: var(--radius-lg);
            width: 48px;
            height: 48px;
            cursor: pointer;
            transition: all var(--transition-fast);
            display: flex;
            align-items: center;
            justify-content: center;
            overflow: hidden;
        }

        .theme-toggle:hover {
            border-color: var(--border-secondary);
            transform: translateY(-1px);
            box-shadow: var(--shadow-md);
            background: var(--bg-elevated);
        }

        .theme-toggle:active {
            transform: translateY(0);
            box-shadow: var(--shadow-sm);
        }

        .scanner-btn {
            position: relative;
            background: var(--bg-tertiary);
            border: 1px solid var(--border-primary);
            border-radius: var(--radius-lg);
            width: 48px;
            height: 48px;
            cursor: pointer;
            transition: all var(--transition-fast);
            display: flex;
            align-items: center;
            justify-content: center;
            overflow: hidden;
            color: var(--text-primary);
        }

        .scanner-btn:hover {
            border-color: var(--border-secondary);
            transform: translateY(-1px);
            box-shadow: var(--shadow-md);
            background: var(--bg-elevated);
            color: var(--accent-primary);
        }

        .scanner-btn:active {
            transform: translateY(0);
            box-shadow: var(--shadow-sm);
        }

        .scanner-icon {
            width: 20px;
            height: 20px;
            transition: all var(--transition-fast);
        }

        .theme-icon {
            width: 20px;
            height: 20px;
            color: var(--text-primary);
            transition: all var(--transition-fast);
            position: absolute;
        }

        .theme-icon.sun {
            opacity: 0;
            transform: rotate(180deg) scale(0.5);
        }

        .theme-icon.moon {
            opacity: 1;
            transform: rotate(0deg) scale(1);
        }

        [data-theme="light"] .theme-icon.sun {
            opacity: 1;
            transform: rotate(0deg) scale(1);
            color: var(--warning);
        }

        [data-theme="light"] .theme-icon.moon {
            opacity: 0;
            transform: rotate(-180deg) scale(0.5);
        }

        [data-theme="dark"] .theme-icon.moon {
            color: var(--accent-primary);
        }

        .license-account {
            display: flex;
            align-items: center;
            gap: var(--space-sm);
            background: var(--bg-tertiary);
            border: 1px solid var(--border-primary);
            border-radius: var(--radius-lg);
            padding: var(--space-xs) var(--space-sm);
            min-height: 48px;
        }

        .license-account-meta {
            display: flex;
            flex-direction: column;
            gap: 1px;
            min-width: 0;
        }

        .license-status-badge {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: fit-content;
            padding: 2px 8px;
            border-radius: 6px;
            border: 1px solid var(--border-primary);
            font-size: 0.7rem;
            font-weight: 700;
            letter-spacing: 0.03em;
            text-transform: uppercase;
            color: var(--text-secondary);
            background: var(--bg-elevated);
            transition: transform var(--transition-fast), box-shadow var(--transition-fast);
            cursor: pointer;
        }

        .license-status-badge.status-pro {
            color: #065f46;
            background: #d1fae5;
            border-color: #6ee7b7;
        }

        [data-theme="dark"] .license-status-badge.status-pro {
            color: #86efac;
            background: rgba(6, 78, 59, 0.75);
            border-color: rgba(52, 211, 153, 0.6);
        }

        .license-status-badge.status-trial {
            color: #374151;
            background: #f3f4f6;
            border-color: transparent;
        }

        [data-theme="dark"] .license-status-badge.status-trial {
            color: #d1d5db;
            background: rgba(31, 41, 55, 0.72);
            border-color: transparent;
        }

        .license-status-text {
            display: none;
        }

        .license-account-btn {
            height: 36px;
            width: 36px;
            padding: 0;
            font-size: 0.78rem;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-primary);
            background: var(--bg-elevated);
            color: var(--text-primary);
            cursor: pointer;
            transition: all var(--transition-fast);
            white-space: nowrap;
            display: inline-flex;
            align-items: center;
            justify-content: center;
        }

        .license-account-btn svg {
            width: 18px;
            height: 18px;
        }

        .license-account-btn:hover {
            transform: translateY(-1px);
            box-shadow: var(--shadow-sm);
            border-color: var(--border-secondary);
            color: var(--accent-primary);
        }

        .license-account-btn:focus-visible {
            outline: 2px solid var(--border-focus);
            outline-offset: 2px;
        }

        /* Card System */
        .card {
            background: var(--bg-secondary);
            border: 1px solid var(--border-primary);
            border-radius: var(--radius-xl);
            overflow: hidden;
            transition: all var(--transition-fast);
            display: flex;
            flex-direction: column;
            height: 100%;
        }

        .card:hover {
            border-color: var(--border-secondary);
            box-shadow: var(--shadow-lg);
        }

        .card-header {
            padding: var(--space-md) var(--space-lg) var(--space-xs);
            background: var(--bg-elevated);
        }

        .card-title {
            color: var(--text-primary);
            margin-bottom: var(--space-xs);
        }

        .card-subtitle {
            color: var(--text-secondary);
        }

        .card-content {
            padding: var(--space-lg);
            flex: 1;
            display: flex;
            flex-direction: column;
            overflow-y: auto;
        }

        /* Main Layout */
        .main-grid {
            position: relative;
            display: grid;
            grid-template-columns: var(--sidebar-width, 400px) 1fr;
            gap: var(--space-lg);
            align-items: stretch;
            flex: 1;
            min-height: 0;
        }

        /* Sidebar Resizer */
        .sidebar-resizer {
            position: absolute;
            left: var(--sidebar-width, 400px);
            top: 0;
            bottom: 0;
            width: 6px;
            transform: translateX(calc(var(--space-lg) / 2 - 3px));
            cursor: col-resize;
            z-index: 10;
            display: flex;
            justify-content: center;
        }

        .sidebar-resizer::after {
            content: '';
            width: 1px;
            height: 100%;
            background-color: var(--accent-primary);
            opacity: 0;
            transition: opacity 0.2s, width 0.2s;
        }

        .sidebar-resizer:hover::after {
            opacity: 0.35;
        }

        body.is-resizing .sidebar-resizer::after,
        .sidebar-resizer.is-resizing::after {
            width: 2px;
            opacity: 0.65;
        }

        .sidebar-resizer.at-limit::after {
            width: 3px;
            opacity: 1;
        }

        body.is-resizing {
            cursor: col-resize !important;
            user-select: none !important;
        }

        body.is-resizing * {
            transition: none !important;
        }

        @media (max-width: 1024px) {
            .sidebar-resizer {
                display: none !important;
            }
        }

        /* Form Controls */
        .form-group {
            margin-bottom: var(--space-lg);
        }

        .form-group:last-child {
            margin-bottom: 0;
        }

        /* Configuration panel specific styling */
        .card-content .btn-full {
            margin-top: auto;
        }

        .form-label {
            display: block;
            color: var(--text-primary);
            font-weight: 500;
            margin-bottom: var(--space-sm);
            font-size: 0.875rem;
        }

        .form-input,
        .form-select,
        .form-textarea {
            width: 100%;
            padding: var(--space-md);
            background: var(--bg-tertiary);
            border: 1px solid var(--border-primary);
            border-radius: var(--radius-lg);
            color: var(--text-primary);
            font-size: 0.875rem;
            font-family: inherit;
            transition: all var(--transition-fast);
            font-feature-settings: 'tnum';
            height: 48px;
            box-sizing: border-box;
            line-height: 1.4;
        }

        .form-textarea {
            min-height: 120px;
            height: auto;
            resize: vertical;
            line-height: 1.45;
        }

        .input-with-counter {
            position: relative;
        }

        .input-with-counter .form-input {
            padding-right: 60px;
        }

        .input-with-clear {
            position: relative;
        }

        .input-with-clear .form-input {
            padding-right: 44px;
        }

        .input-with-clear .form-textarea {
            padding-right: 44px;
        }

        .textarea-with-clear .input-clear-btn {
            top: 12px;
            transform: none;
        }

        .input-clear-btn {
            position: absolute;
            right: 12px;
            top: 50%;
            transform: translateY(-50%);
            background: none;
            border: none;
            color: var(--text-tertiary);
            cursor: pointer;
            padding: 4px;
            display: flex;
            align-items: center;
            justify-content: center;
            opacity: 0;
            pointer-events: none;
            transition: all 0.2s ease;
            border-radius: 50%;
        }

        .input-clear-btn.visible {
            opacity: 1;
            pointer-events: auto;
        }

        .input-clear-btn:hover {
            color: var(--text-primary);
            background-color: var(--bg-secondary);
        }

        .input-clear-btn svg {
            width: 14px;
            height: 14px;
            stroke-width: 2.5;
        }

        .digit-counter {
            position: absolute;
            right: var(--space-md);
            top: 50%;
            transform: translateY(-50%);
            color: var(--text-tertiary);
            font-size: 0.75rem;
            font-weight: 500;
            font-family: 'JetBrains Mono', monospace;
            pointer-events: none;
            background: var(--bg-tertiary);
            padding: 2px 6px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-primary);
        }

        /* Counter valid state */
        .digit-counter.valid {
            color: var(--success);
            border-color: var(--success);
        }

        .form-select {
            height: 52px;
            padding-top: var(--space-md);
            padding-bottom: var(--space-md);
            padding-right: 3rem;
            -webkit-appearance: none;
            -moz-appearance: none;
            appearance: none;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%23a3a3a3'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M19 9l-7 7-7-7'%3E%3C/path%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 20px center;
            background-size: 1.25rem;
            cursor: pointer;
        }

        .form-input:focus,
        .form-select:focus,
        .form-textarea:focus {
            outline: none;
            border-color: var(--border-focus);
            box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
            background: var(--bg-elevated);
        }

        .form-input::placeholder,
        .form-textarea::placeholder {
            color: var(--text-tertiary);
        }

        /* Button System */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: var(--space-sm);
            padding: var(--space-md) var(--space-lg);
            border: none;
            border-radius: var(--radius-lg);
            font-family: inherit;
            font-weight: 500;
            font-size: 0.875rem;
            cursor: pointer;
            transition: all var(--transition-fast);
            text-decoration: none;
            position: relative;
            overflow: hidden;
            height: 48px;
        }

        .btn:disabled {
            opacity: 0.5;
            cursor: not-allowed;
        }

        .btn-primary {
            background: var(--accent-primary);
            color: white;
        }

        .btn-primary:hover:not(:disabled) {
            background: var(--accent-primary-hover);
            transform: translateY(-1px);
            box-shadow: var(--shadow-md);
        }

        .btn-secondary {
            background: var(--accent-secondary);
            color: white;
        }

        .btn-secondary:hover:not(:disabled) {
            background: var(--accent-secondary-hover);
            transform: translateY(-1px);
            box-shadow: var(--shadow-md);
        }

        .btn-tertiary {
            background: var(--accent-tertiary);
            color: white;
        }

        .btn-tertiary:hover:not(:disabled) {
            background: var(--accent-tertiary-hover);
            transform: translateY(-1px);
            box-shadow: var(--shadow-md);
        }

        .btn-ghost {
            background: var(--bg-tertiary);
            color: var(--text-primary);
            border: 1px solid var(--border-primary);
        }

        .btn-ghost:hover:not(:disabled) {
            background: var(--bg-elevated);
            border-color: var(--border-secondary);
            transform: translateY(-1px);
        }

        .btn-lg {
            padding: var(--space-lg) var(--space-xl);
            font-size: 1rem;
            height: 56px;
        }

        .btn-full {
            width: 100%;
        }

        /* Color Picker */
        .color-group {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--space-lg);
            max-width: 100%;
            overflow: visible;
        }

        .color-picker {
            position: relative;
            background: var(--bg-tertiary);
            border: 1px solid var(--border-primary);
            border-radius: var(--radius-lg);
            padding: var(--space-lg);
            transition: all var(--transition-fast);
            min-width: 0;
        }

        .color-picker:hover {
            border-color: var(--border-secondary);
            transform: translateY(-1px);
            margin-top: 1px;
        }

        .color-picker.drag-over {
            border-color: var(--accent-primary);
            background: rgba(59, 130, 246, 0.1);
            transform: scale(1.02);
        }

        .color-picker[draggable="true"] {
            cursor: grab;
        }

        .color-picker[draggable="true"]:active {
            cursor: grabbing;
        }

        .color-picker.dragging {
            opacity: 0.5;
            transform: scale(0.95);
        }

        .color-picker-label {
            display: block;
            font-size: 0.75rem;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: var(--space-md);
            text-transform: uppercase;
            letter-spacing: 0.05em;
        }

        .color-display {
            margin-bottom: var(--space-md);
        }

        .color-swatch-button {
            width: 100%;
            height: 60px;
            border: none;
            border-radius: var(--radius-lg);
            cursor: pointer;
            transition: all var(--transition-fast);
            position: relative;
            overflow: hidden;
            box-shadow: var(--shadow-sm);
        }

        .color-swatch-button:hover {
            transform: scale(1.02);
            box-shadow: var(--shadow-md);
        }

        .color-swatch-button:active {
            transform: scale(0.98);
        }

        .color-swatch-button:focus {
            outline: 2px solid var(--accent-primary);
            outline-offset: 2px;
        }

        .color-input-row {
            position: relative;
            display: flex;
            align-items: center;
        }

        .color-text-input {
            width: 100%;
            background: var(--bg-elevated);
            border: 1px solid var(--border-primary);
            border-radius: var(--radius-md);
            padding: var(--space-sm);
            padding-right: 40px;
            color: var(--text-primary);
            font-family: 'JetBrains Mono', monospace;
            font-size: 0.75rem;
            transition: all var(--transition-fast);
        }

        .color-text-input:focus {
            outline: none;
            border-color: var(--border-focus);
            box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.15);
        }

        .paste-btn {
            position: absolute;
            right: 6px;
            background: transparent;
            border: none;
            color: var(--text-secondary);
            cursor: pointer;
            padding: var(--space-sm);
            border-radius: var(--radius-sm);
            transition: all var(--transition-fast);
            display: flex;
            align-items: center;
            justify-content: center;
            width: 32px;
            height: 32px;
            opacity: 0;
            transform: translateX(4px);
        }

        .color-input-row:hover .paste-btn {
            opacity: 1;
            transform: translateX(0);
        }

        .paste-btn:hover {
            background: var(--bg-secondary);
            color: var(--text-primary);
            transform: scale(1.1);
        }

        .paste-btn:focus {
            outline: 2px solid var(--accent-primary);
            outline-offset: 1px;
            opacity: 1;
            transform: translateX(0);
        }

        /* Hidden color input for functionality */
        .hidden-color-input {
            position: absolute;
            opacity: 0;
            pointer-events: none;
            width: 0;
            height: 0;
        }

        /* Preview Area */
        .preview-container {
            height: 100%;
            display: flex;
            flex-direction: column;
        }

        .barcode-preview {
            background: var(--bg-tertiary);
            border: 1px solid var(--border-primary);
            border-radius: var(--radius-xl);
            padding: var(--space-2xl);
            text-align: center;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            transition: all var(--transition-fast);
            flex: 1;
        }

        .barcode-preview:hover {
            border-color: var(--border-secondary);
        }

        .barcode-wrapper {
            background: white;
            padding: var(--space-lg);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            margin-bottom: var(--space-lg);
            transition: all var(--transition-fast);
        }

        .barcode-wrapper:hover {
            transform: scale(1.02);
            box-shadow: var(--shadow-md);
        }

        /* Empty State Icon */
        .empty-state {
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            opacity: 0.3;
            transition: all var(--transition-smooth);
        }

        .empty-state-icon {
            width: 120px;
            height: auto;
            margin-bottom: var(--space-lg);
            opacity: 0.6;
            color: var(--accent-primary);
        }

        .empty-state-text {
            color: var(--text-tertiary);
            font-size: 0.875rem;
            text-align: center;
            max-width: 200px;
            line-height: 1.5;
        }

        .empty-state.hidden {
            display: none;
        }

        /* Zoom Pan Viewport - wraps the zoom container to prevent cropping */
        .zoom-pan-viewport {
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            overflow: visible;
            display: flex;
            align-items: center;
            justify-content: center;
            pointer-events: none;
        }

        .zoom-pan-container {
            position: relative;
            display: flex;
            align-items: center;
            justify-content: center;
            pointer-events: auto;
        }

        .zoom-pan-transform {
            transform-origin: center center;
            transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            will-change: transform;
        }

        /* Rubber band snap-back animation */
        .zoom-pan-transform.rubber-band {
            transition: transform 0.6s cubic-bezier(0.34, 1.8, 0.64, 1);
        }

        /* Zoom Controls */
        .preview-header-actions {
            display: flex;
            align-items: center;
            gap: var(--space-sm);
        }

        .zoom-controls {
            display: flex;
            align-items: center;
            gap: var(--space-xs);
            background: var(--bg-tertiary);
            border: 1px solid var(--border-primary);
            border-radius: var(--radius-md);
            padding: var(--space-xs);
            transition: opacity var(--transition-fast);
        }

        .zoom-controls.disabled {
            opacity: 0.4;
            pointer-events: none;
        }

        .zoom-btn {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 28px;
            height: 28px;
            border: none;
            background: transparent;
            color: var(--text-secondary);
            border-radius: var(--radius-sm);
            cursor: pointer;
            transition: all var(--transition-fast);
            flex-shrink: 0;
        }

        .zoom-btn:hover:not(:disabled) {
            background: var(--bg-secondary);
            color: var(--text-primary);
        }

        .zoom-btn:active:not(:disabled) {
            transform: scale(0.95);
        }

        .zoom-btn:disabled {
            opacity: 0.4;
            cursor: not-allowed;
            color: var(--text-tertiary);
        }

        .zoom-reset-btn {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border: 1px solid var(--border-primary);
            background: var(--bg-tertiary);
            border-radius: var(--radius-md);
            margin-right: var(--space-sm);
            cursor: pointer;
            color: var(--text-secondary);
            transition: all var(--transition-fast);
        }

        .zoom-reset-btn:hover:not(:disabled) {
            background: var(--bg-secondary);
            color: var(--text-primary);
        }

        .zoom-reset-btn:disabled {
            background: var(--bg-tertiary);
            border-color: var(--border-primary);
            cursor: not-allowed;
        }

        .zoom-percentage-wrapper {
            position: relative;
        }

        .zoom-percentage {
            width: 58px;
            height: 28px;
            border: 1px solid transparent;
            background: transparent;
            color: var(--text-primary);
            font-size: 0.8125rem;
            font-weight: 500;
            text-align: center;
            border-radius: var(--radius-sm);
            cursor: text;
            transition: all var(--transition-fast);
            font-family: 'Inter', system-ui, -apple-system, sans-serif;
        }

        .zoom-percentage:hover {
            background: var(--bg-secondary);
        }

        .zoom-percentage:focus {
            outline: none;
            border-color: var(--accent-primary);
            background: var(--bg-primary);
        }

        .zoom-percentage::selection {
            background: var(--accent-primary);
            color: white;
        }

        /* Preview Area - ensure empty state is centered */
        .barcode-preview {
            position: relative;
            overflow: hidden;
        }

        .empty-state {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            z-index: 1;
            pointer-events: none;
        }

        #error-message {
            position: absolute;
            top: var(--space-lg);
            left: var(--space-lg);
            right: var(--space-lg);
            z-index: 2;
        }

        /* Smooth spring animation for zoom */
        @keyframes zoomPulse {
            0% {
                transform: scale(1);
            }

            50% {
                transform: scale(1.02);
            }

            100% {
                transform: scale(1);
            }
        }

        .zoom-pan-transform.animating {
            transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
        }

        /* Export Controls */
        .export-controls {
            margin-top: var(--space-lg);
            display: grid;
            gap: var(--space-lg);
            grid-template-columns: 1fr;
            align-items: end;
        }

        .export-width-group {
            margin-bottom: 0;
        }

        .download-actions {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--space-md);
            width: 100%;
            align-items: stretch;
        }

        .download-btn {
            background: var(--bg-tertiary);
            color: var(--text-primary);
            border: 1px solid var(--border-primary);
            transition: all var(--transition-fast);
            height: 48px;
            display: flex;
            justify-content: center;
            align-items: center;
            text-align: center;
        }

        .download-btn:hover:not(:disabled) {
            background: var(--accent-secondary);
            color: white;
            border-color: var(--accent-secondary);
            transform: translateY(-1px);
            box-shadow: var(--shadow-md);
        }

        .download-btn:hover:not(:disabled).btn-tertiary {
            background: var(--accent-tertiary);
            border-color: var(--accent-tertiary);
        }

        .download-btn span {
            transform: translateY(1px);
        }

        /* Responsive layout for export controls */
        @media (min-width: 769px) {
            .export-controls {
                grid-template-columns: 1fr 2fr;
                align-items: end;
                gap: var(--space-md);
            }
        }

        /* Hover Outlines for UI Elements */
        .form-input,
        .form-select,
        .form-textarea,
        .color-text-input {
            transition: all var(--transition-fast), box-shadow var(--transition-fast);
        }

        .form-input:hover,
        .form-select:hover,
        .form-textarea:hover {
            box-shadow: 0 0 0 1px var(--border-secondary);
        }

        .color-swatch-button {
            transition: all var(--transition-fast), box-shadow var(--transition-fast);
        }

        .color-swatch-button:hover {
            box-shadow: var(--shadow-md);
        }

        .theme-toggle {
            transition: all var(--transition-fast), box-shadow var(--transition-fast);
        }

        .theme-toggle:hover {
            box-shadow: var(--shadow-md), 0 0 0 1px var(--border-secondary);
        }

        .btn {
            transition: all var(--transition-fast), box-shadow var(--transition-fast);
        }

        .btn-primary:hover:not(:disabled) {
            box-shadow: var(--shadow-md), 0 0 0 1px rgba(59, 130, 246, 0.3);
        }

        .btn-secondary:hover:not(:disabled) {
            box-shadow: var(--shadow-md), 0 0 0 1px rgba(16, 185, 129, 0.3);
        }

        .btn-tertiary:hover:not(:disabled) {
            box-shadow: var(--shadow-md), 0 0 0 1px rgba(139, 92, 246, 0.3);
        }

        .btn-ghost:hover:not(:disabled) {
            box-shadow: 0 0 0 1px var(--border-secondary);
        }

        .color-text-input:hover {
            box-shadow: 0 0 0 1px var(--border-secondary);
        }

        /* Error States */
        .error-message {
            color: var(--error);
            background: rgba(239, 68, 68, 0.1);
            border: 1px solid rgba(239, 68, 68, 0.2);
            border-radius: var(--radius-md);
            padding: var(--space-md);
            font-size: 0.875rem;
            margin-top: var(--space-md);
            text-align: center;
        }

        /* Info Cards */
        .info-card {
            background: var(--bg-secondary);
            border: 1px solid var(--border-primary);
            border-left: 4px solid var(--accent-primary);
            border-radius: var(--radius-lg);
            padding: var(--space-lg);
            margin-top: var(--space-xl);
        }

        .info-card-title {
            color: var(--text-primary);
            margin-bottom: var(--space-md);
        }

        .info-list {
            list-style: none;
            padding: 0;
        }

        .info-list li {
            color: var(--text-secondary);
            margin-bottom: var(--space-sm);
            padding-left: var(--space-lg);
            position: relative;
        }

        .info-list li::before {
            content: '→';
            position: absolute;
            left: 0;
            color: var(--accent-primary);
            font-weight: 600;
        }

        .info-list li strong {
            color: var(--text-primary);
        }

        /* Dynamic Field Visibility */
        .field-group {
            display: none;
            animation: fadeIn 0.3s ease;
        }

        .field-group.active {
            display: block;
        }

        @keyframes fadeIn {
            from {
                opacity: 0;
                transform: translateY(-10px);
            }

            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        /* Loading States */
        .btn.loading {
            position: relative;
            color: transparent;
        }

        .btn.loading::after {
            content: '';
            position: absolute;
            width: 16px;
            height: 16px;
            border: 2px solid transparent;
            border-top: 2px solid currentColor;
            border-radius: 50%;
            animation: spin 1s linear infinite;
            color: white;
        }

        @keyframes spin {
            to {
                transform: rotate(360deg);
            }
        }

        /* Responsive Design */
        @media (max-width: 1024px) {
            .main-grid {
                grid-template-columns: 1fr;
                gap: var(--space-lg);
                min-height: auto;
            }

            .preview-container {
                position: static;
                min-height: auto;
            }

            .card {
                height: auto;
            }
        }

        @media (max-width: 768px) {
            .app-container {
                padding: var(--space-md);
            }

            .app-header {
                flex-direction: row;
                justify-content: space-between;
                gap: var(--space-md);
                text-align: left;
            }

            .app-title {
                flex: 1;
                min-width: 0;
            }

            .header-actions {
                width: auto;
                min-width: 0;
            }

            .license-account {
                min-height: 44px;
                padding: 4px 8px;
            }

            .license-account-meta {
                min-width: 0;
                max-width: 145px;
            }

            .license-account-btn {
                height: 32px;
                padding: 0 10px;
                font-size: 0.72rem;
            }

            .card-content {
                padding: var(--space-md);
                max-height: calc(100vh - 250px);
            }

            .color-group {
                grid-template-columns: 1fr;
                gap: var(--space-sm);
            }

            .color-picker {
                padding: var(--space-sm);
            }

            .export-controls {
                grid-template-columns: 1fr;
            }

            .download-actions {
                grid-template-columns: 1fr;
                gap: var(--space-sm);
            }
        }

        @media (max-width: 480px) {
            .app-header {
                align-items: flex-start;
            }

            .header-actions {
                flex-direction: column-reverse;
                align-items: flex-end;
            }

            .license-account {
                width: 100%;
                justify-content: space-between;
            }

            .color-group {
                grid-template-columns: 1fr;
                gap: var(--space-md);
            }

            .color-picker {
                padding: var(--space-md);
            }

            .color-text-input {
                font-size: 0.7rem;
                padding-right: 36px;
            }

            .paste-btn {
                width: 28px;
                height: 28px;
                right: 4px;
            }
        }

        /* Dark Theme Scrollbars */
        [data-theme="dark"] ::-webkit-scrollbar {
            width: 8px;
            height: 8px;
        }

        [data-theme="dark"] ::-webkit-scrollbar-track {
            background: var(--bg-tertiary);
            border-radius: var(--radius-sm);
        }

        [data-theme="dark"] ::-webkit-scrollbar-thumb {
            background: var(--border-secondary);
            border-radius: var(--radius-sm);
            transition: all var(--transition-fast);
        }

        [data-theme="dark"] ::-webkit-scrollbar-thumb:hover {
            background: var(--accent-primary);
        }

        [data-theme="dark"] ::-webkit-scrollbar-corner {
            background: var(--bg-tertiary);
        }

        /* Light Theme Scrollbars */
        [data-theme="light"] ::-webkit-scrollbar {
            width: 8px;
            height: 8px;
        }

        [data-theme="light"] ::-webkit-scrollbar-track {
            background: var(--bg-tertiary);
            border-radius: var(--radius-sm);
        }

        [data-theme="light"] ::-webkit-scrollbar-thumb {
            background: var(--border-secondary);
            border-radius: var(--radius-sm);
            transition: all var(--transition-fast);
        }

        [data-theme="light"] ::-webkit-scrollbar-thumb:hover {
            background: var(--accent-primary);
        }

        [data-theme="light"] ::-webkit-scrollbar-corner {
            background: var(--bg-tertiary);
        }

        /* Context Menu Styles - Flyout menu for Preview area */
        .flyout-menu {
            position: fixed;
            z-index: 10000;
            background: var(--bg-elevated);
            border: 1px solid var(--border-primary);
            border-radius: var(--radius-xl);
            padding: var(--space-xs);
            min-width: 220px;
            box-shadow: var(--shadow-xl);
            display: none;
            opacity: 0;
            transform: scale(0.95) translateY(-5px);
            transition: opacity 0.15s var(--transition-smooth), transform 0.15s var(--transition-smooth);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            user-select: none;
        }

        .flyout-menu.visible {
            display: block;
            opacity: 1;
            transform: scale(1) translateY(0);
        }

        .flyout-menu-item {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 10px 14px;
            color: var(--text-primary);
            font-size: 14px;
            font-weight: 500;
            cursor: pointer;
            border-radius: var(--radius-md);
            transition: all var(--transition-fast);
        }

        .flyout-menu-item:hover {
            background: var(--bg-tertiary);
        }

        .flyout-menu-icon {
            width: 18px;
            height: 18px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-secondary);
            opacity: 0.8;
            transition: all var(--transition-fast);
        }

        .flyout-menu-item:hover .flyout-menu-icon {
            color: var(--accent-primary);
            opacity: 1;
            transform: scale(1.1);
        }

        .flyout-menu-icon img,
        .flyout-menu-icon svg {
            width: 100%;
            height: 100%;
        }

        .flyout-menu-separator {
            height: 1px;
            background: var(--border-primary);
            margin: var(--space-xs) 8px;
            opacity: 0.5;
        }

        .flyout-menu-item:active {
            transform: scale(0.98);
        }

        /* Accessibility */

        @media (prefers-reduced-motion: reduce) {
            * {
                animation-duration: 0.01ms !important;
                animation-iteration-count: 1 !important;
                transition-duration: 0.01ms !important;
            }
        }

        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            white-space: nowrap;
            border: 0;
        }

        /* Focus states for keyboard navigation */
        .btn:focus-visible,
        .form-input:focus-visible,
        .form-textarea:focus-visible,
        .form-select:focus-visible {
            outline: 2px solid var(--accent-primary);
            outline-offset: 2px;
        }

        /* Margin Slider */
        .margin-control {
            display: flex;
            align-items: center;
            gap: var(--space-md);
        }

        .margin-slider {
            flex: 1;
            height: 6px;
            border-radius: var(--radius-sm);
            outline: none;
            -webkit-appearance: none;
            appearance: none;
            cursor: pointer;
            position: relative;
            background: transparent;
        }

        /* Webkit (Chrome, Safari, Edge) */
        .margin-slider::-webkit-slider-runnable-track {
            width: 100%;
            height: 6px;
            border-radius: var(--radius-sm);
            background: var(--bg-tertiary);
            background-image: linear-gradient(to right,
                    var(--slider-track-fill) 0%,
                    var(--slider-track-fill) var(--slider-progress, 0%),
                    var(--bg-tertiary) var(--slider-progress, 0%),
                    var(--bg-tertiary) 100%);
            opacity: 0.7;
            transition: opacity var(--transition-fast);
        }

        .margin-slider:hover::-webkit-slider-runnable-track {
            opacity: 1;
        }

        .margin-slider::-webkit-slider-thumb {
            -webkit-appearance: none;
            appearance: none;
            width: 20px;
            height: 20px;
            background: var(--accent-primary);
            border-radius: 50%;
            cursor: pointer;
            transition: background-color var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
            box-shadow: var(--shadow-sm);
            margin-top: -7px;
        }

        .margin-slider::-webkit-slider-thumb:hover {
            background: var(--accent-primary-hover);
            transform: scale(1.1);
            box-shadow: var(--shadow-md);
        }

        /* Firefox */
        .margin-slider::-moz-range-track {
            width: 100%;
            height: 6px;
            border-radius: var(--radius-sm);
            background: var(--bg-tertiary);
            border: none;
            opacity: 0.7;
            transition: opacity var(--transition-fast);
        }

        .margin-slider:hover::-moz-range-track {
            opacity: 1;
        }

        .margin-slider::-moz-range-progress {
            height: 6px;
            border-radius: var(--radius-sm);
            background: var(--slider-track-fill);
            opacity: 0.7;
            transition: opacity var(--transition-fast);
        }

        .margin-slider:hover::-moz-range-progress {
            opacity: 1;
        }

        .margin-slider::-moz-range-thumb {
            width: 20px;
            height: 20px;
            background: var(--accent-primary);
            border: none;
            border-radius: 50%;
            cursor: pointer;
            transition: all var(--transition-fast);
            box-shadow: var(--shadow-sm);
        }

        .margin-slider::-moz-range-thumb:hover {
            background: var(--accent-primary-hover);
            transform: scale(1.1);
            box-shadow: var(--shadow-md);
        }

        .margin-number {
            width: 70px;
            padding: var(--space-sm) var(--space-md);
            background: var(--bg-tertiary);
            border: 1px solid var(--border-primary);
            border-radius: var(--radius-lg);
            color: var(--text-primary);
            font-size: 0.875rem;
            text-align: center;
            transition: all var(--transition-fast);
        }

        .margin-number:focus {
            outline: none;
            border-color: var(--border-focus);
            box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
            background: var(--bg-elevated);
        }

        /* Toast Notifications */
        .toast {
            position: fixed;
            bottom: var(--space-xl);
            left: 50%;
            background: var(--bg-elevated);
            border: 1px solid var(--border-primary);
            border-radius: var(--radius-lg);
            padding: var(--space-md) var(--space-lg);
            color: var(--text-primary);
            font-size: 0.875rem;
            font-weight: 500;
            box-shadow: var(--shadow-lg);
            transform: translate(-50%, 100px);
            opacity: 0;
            transition: all var(--transition-smooth);
            z-index: 1000;
            max-width: 300px;
        }

        .toast.show {
            transform: translate(-50%, 0);
            opacity: 1;
        }

        .toast-success {
            border-left: 4px solid var(--success);
        }

        .toast-error {
            border-left: 4px solid var(--error);
        }

        .toast-info {
            border-left: 4px solid var(--accent-primary);
        }

        .pro-pill {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            margin-left: 6px;
            padding: 2px 6px;
            border-radius: 999px;
            font-size: 0.62rem;
            font-weight: 700;
            letter-spacing: 0.05em;
            text-transform: uppercase;
            vertical-align: middle;
            line-height: 1;
            transform: none;
            background: rgba(59, 130, 246, 0.14);
            color: var(--accent-primary);
            border: 1px solid rgba(59, 130, 246, 0.25);
        }

        [data-theme="dark"] .pro-pill {
            color: var(--accent-primary);
            background: rgba(59, 130, 246, 0.14);
            border-color: rgba(59, 130, 246, 0.25);
        }

        .download-btn>span {
            display: inline-flex;
            align-items: center;
        }

        .download-btn:not(:disabled):hover .pro-pill {
            color: #ffffff;
            background: rgba(255, 255, 255, 0.2);
            border-color: rgba(255, 255, 255, 0.55);
        }

        .copy-icon-btn.pro-feature-btn {
            position: relative;
        }

        .copy-icon-btn .icon-lock {
            display: none;
            width: 18px;
            height: 18px;
            background-color: currentColor;
            -webkit-mask-image: url('icons/lock.svg');
            -webkit-mask-repeat: no-repeat;
            -webkit-mask-position: center;
            -webkit-mask-size: contain;
            mask-image: url('icons/lock.svg');
            mask-repeat: no-repeat;
            mask-position: center;
            mask-size: contain;
        }

        .download-btn .icon-lock {
            display: none;
            width: 18px;
            height: 18px;
            background-color: currentColor;
            -webkit-mask-image: url('icons/lock.svg');
            -webkit-mask-repeat: no-repeat;
            -webkit-mask-position: center;
            -webkit-mask-size: contain;
            mask-image: url('icons/lock.svg');
            mask-repeat: no-repeat;
            mask-position: center;
            mask-size: contain;
        }

        body[data-license-tier="trial"] .copy-icon-btn.pro-feature-btn .icon-copy,
        body[data-license-tier="trial"] .copy-icon-btn.pro-feature-btn .icon-check {
            display: none !important;
        }

        body[data-license-tier="trial"] .copy-icon-btn.pro-feature-btn .icon-lock {
            display: block;
        }

        body[data-license-tier="trial"] .download-btn.pro-feature-btn .icon-download {
            display: none;
        }

        body[data-license-tier="trial"] .download-btn.pro-feature-btn .icon-lock {
            display: block;
        }

        .shortcut-pro-tag {
            margin-left: 8px;
            padding: 2px 6px;
            border-radius: 999px;
            font-size: 0.62rem;
            font-weight: 700;
            letter-spacing: 0.04em;
            text-transform: uppercase;
            background: rgba(59, 130, 246, 0.14);
            color: var(--accent-primary);
            border: 1px solid rgba(59, 130, 246, 0.25);
        }

        body[data-license-tier="pro"] .pro-pill,
        body[data-license-tier="pro"] .shortcut-pro-tag {
            display: none !important;
        }

        .modal-content.license-modal-content {
            width: min(100%, 680px);
            max-width: 680px;
            height: auto;
            max-height: none;
            overflow: hidden;
        }

        .license-modal-body {
            padding: var(--space-lg);
            display: flex;
            flex-direction: column;
            gap: var(--space-sm);
            overflow: visible;
        }

        .license-benefits {
            margin: 0;
            padding: 0;
            list-style: none;
            color: var(--text-secondary);
            font-size: 0.9rem;
            line-height: 1.55;
            display: grid;
            grid-template-columns: repeat(2, minmax(0, 1fr));
            gap: 8px;
            margin-bottom: var(--space-sm);
        }

        .license-benefits li {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 10px;
            border: 1px solid var(--border-primary);
            border-radius: var(--radius-md);
            background: var(--bg-secondary);
            padding: 8px 10px;
        }

        .license-benefit-check {
            width: 16px;
            height: 16px;
            flex: 0 0 16px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-secondary);
        }

        [data-theme="dark"] .license-benefit-check {
            color: #34d399;
        }

        .license-benefit-check svg {
            width: 16px;
            height: 16px;
            stroke: currentColor;
        }

        .license-title-icon {
            width: 28px;
            height: 28px;
            border-radius: 8px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: #10b981;
            color: #ffffff;
        }

        .license-title-icon svg {
            width: 16px;
            height: 16px;
            stroke: currentColor;
        }

        .license-intro {
            font-size: 0.875rem;
            color: var(--text-secondary);
            line-height: 1.55;
            margin: 0;
        }

        .license-modal-actions {
            display: flex;
            gap: var(--space-sm);
            flex-wrap: wrap;
            margin-top: var(--space-md);
        }

        .license-modal-actions .btn {
            flex: 1;
            min-width: 190px;
        }

        .license-modal-actions .btn-icon {
            width: 16px;
            height: 16px;
            margin-right: 6px;
            vertical-align: -2px;
            stroke: currentColor;
        }

        .license-view-pro {
            display: none;
        }

        body[data-license-tier="pro"] .license-view-trial {
            display: none;
        }

        body[data-license-tier="pro"] .license-view-pro {
            display: flex;
            flex-direction: column;
            gap: var(--space-md);
        }

        .license-info-grid {
            display: grid;
            gap: var(--space-sm);
        }

        .license-info-row {
            display: flex;
            justify-content: space-between;
            gap: var(--space-md);
            padding: 10px 12px;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-primary);
            background: var(--bg-secondary);
        }

        .license-info-label {
            color: var(--text-secondary);
            font-size: 0.82rem;
        }

        .license-info-value {
            color: var(--text-primary);
            font-size: 0.82rem;
            font-weight: 600;
            text-align: right;
            font-family: 'JetBrains Mono', monospace;
        }

        .license-status-value {
            color: var(--accent-secondary);
            font-family: inherit;
            text-transform: uppercase;
            letter-spacing: 0.04em;
        }

        .btn-danger-outline {
            color: #b91c1c;
            border: 1px solid rgba(220, 38, 38, 0.45);
            background: rgba(220, 38, 38, 0.1);
        }

        .btn-danger-outline:hover:not(:disabled) {
            color: #991b1b;
            border-color: rgba(220, 38, 38, 0.58);
            background: rgba(220, 38, 38, 0.16);
            transform: translateY(-1px);
        }

        [data-theme="dark"] .btn-danger-outline {
            color: #fca5a5;
            border-color: rgba(248, 113, 113, 0.45);
            background: rgba(127, 29, 29, 0.35);
        }

        [data-theme="dark"] .btn-danger-outline:hover:not(:disabled) {
            color: #fecaca;
            border-color: rgba(252, 165, 165, 0.6);
            background: rgba(153, 27, 27, 0.45);
        }

        .license-feedback {
            border-radius: var(--radius-md);
            padding: 10px 12px;
            border: 1px solid var(--border-primary);
            background: var(--bg-secondary);
            color: var(--text-secondary);
            font-size: 0.85rem;
            min-height: 42px;
            display: flex;
            align-items: center;
        }

        .license-feedback.success {
            border-color: rgba(16, 185, 129, 0.45);
            color: #047857;
            background: rgba(16, 185, 129, 0.12);
        }

        [data-theme="dark"] .license-feedback.success {
            color: #6ee7b7;
            background: rgba(6, 78, 59, 0.52);
        }

        .license-feedback.error {
            border-color: rgba(239, 68, 68, 0.45);
            color: #b91c1c;
            background: rgba(239, 68, 68, 0.1);
        }

        [data-theme="dark"] .license-feedback.error {
            color: #fca5a5;
            background: rgba(127, 29, 29, 0.5);
        }

        .license-feedback.info {
            border-color: rgba(59, 130, 246, 0.45);
            color: #1d4ed8;
            background: rgba(59, 130, 246, 0.1);
        }

        [data-theme="dark"] .license-feedback.info {
            color: #93c5fd;
            background: rgba(30, 58, 138, 0.5);
        }

        .celebration-pop {
            animation: celebrationPop 600ms cubic-bezier(0.2, 0.8, 0.2, 1);
        }

        @keyframes celebrationPop {
            0% {
                transform: scale(0.9);
                box-shadow: 0 0 0 rgba(16, 185, 129, 0);
            }

            55% {
                transform: scale(1.12);
                box-shadow: 0 0 0 10px rgba(16, 185, 129, 0.18);
            }

            100% {
                transform: scale(1);
                box-shadow: 0 0 0 rgba(16, 185, 129, 0);
            }
        }

        /* Preview Header Layout */
        .preview-header-content {
            display: flex;
            justify-content: space-between;
            align-items: flex-start;
            gap: var(--space-md);
            width: 100%;
        }

        .preview-header-text {
            flex: 1;
        }

        /* Info Button */
        .info-btn {
            background: var(--bg-tertiary);
            border: 1px solid var(--border-primary);
            border-radius: var(--radius-lg);
            width: 44px;
            height: 44px;
            cursor: pointer;
            transition: all var(--transition-fast);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-secondary);
            flex-shrink: 0;
        }

        .info-btn:hover {
            background: var(--bg-elevated);
            border-color: var(--border-secondary);
            color: var(--text-primary);
            transform: translateY(-1px);
            box-shadow: var(--shadow-md);
        }

        .info-btn:active {
            transform: translateY(0);
            box-shadow: var(--shadow-sm);
        }

        .info-btn:focus {
            outline: 2px solid var(--accent-primary);
            outline-offset: 2px;
        }

        /* Floating info button - bottom right of preview */
        .info-btn-floating {
            position: absolute;
            bottom: var(--space-lg);
            right: var(--space-lg);
            z-index: 10;
            background: var(--bg-glass);
            backdrop-filter: blur(8px);
            border-color: var(--border-secondary);
        }

        .info-btn-floating:hover {
            background: var(--bg-elevated);
        }

        /* Modal Styles */
        .modal-overlay {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(0, 0, 0, 0.75);
            backdrop-filter: blur(4px);
            display: flex;
            align-items: center;
            justify-content: center;
            z-index: 1000;
            opacity: 0;
            visibility: hidden;
            transition: all var(--transition-smooth);
            padding: var(--space-lg);
        }

        .modal-overlay.show {
            opacity: 1;
            visibility: visible;
        }

        .modal-content {
            background: var(--bg-elevated);
            border: 1px solid var(--border-primary);
            border-radius: var(--radius-2xl);
            box-shadow: var(--shadow-xl);
            width: 100%;
            max-width: 900px;
            max-height: 90vh;
            height: 90vh;
            position: relative;
            overflow: hidden;
            transform: scale(0.95) translateY(20px);
            transition: all var(--transition-smooth);
            display: flex;
            flex-direction: column;
        }

        .modal-overlay.show .modal-content {
            transform: scale(1) translateY(0);
        }

        .modal-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: var(--space-xl) var(--space-xl) var(--space-lg);
            border-bottom: 1px solid var(--border-primary);
            background: var(--bg-secondary);
        }

        .modal-title {
            display: flex;
            align-items: center;
            gap: var(--space-md);
        }

        .modal-app-icon {
            cursor: pointer;
        }

        .modal-app-icon svg {
            display: block;
            width: 32px;
            height: 32px;
        }

        .modal-header h2 {
            color: var(--text-primary);
            margin: 0;
        }

        .modal-app-name {
            position: relative;
            display: inline-block;
            padding-right: 0;
        }

        .modal-app-version {
            position: absolute;
            top: 4px;
            right: -38px;
            font-size: 0.35em;
            font-weight: 400;
            color: var(--text-tertiary);
            background: var(--bg-elevated);
            padding: 1px 4px;
            border-radius: var(--radius-xs);
            border: 1px solid var(--border-primary);
            opacity: 1;
            white-space: nowrap;
        }

        .modal-close-btn {
            background: var(--bg-tertiary);
            border: 1px solid var(--border-primary);
            border-radius: var(--radius-lg);
            width: 40px;
            height: 40px;
            cursor: pointer;
            transition: all var(--transition-fast);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-secondary);
        }

        .modal-close-btn:hover {
            background: var(--bg-elevated);
            border-color: var(--border-secondary);
            color: var(--text-primary);
            transform: scale(1.05);
        }

        .modal-close-btn:focus {
            outline: 2px solid var(--accent-primary);
            outline-offset: 2px;
        }

        /* Scanner UI */
        .scanner-controls {
            display: flex;
            gap: var(--space-sm);
            margin-bottom: var(--space-md);
        }

        .scanner-controls .btn {
            flex: 1;
            text-align: center;
            justify-content: center;
        }

        .scanner-viewport-container {
            position: relative;
            width: 100%;
            height: 300px;
            background: var(--bg-tertiary);
            border-radius: var(--radius-lg);
            overflow: hidden;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: var(--space-md);
            border: 1px solid var(--border-primary);
        }

        .scanner-viewport-container.drag-over {
            border: 2px dashed var(--accent-primary);
            background: rgba(37, 99, 235, 0.05);
        }

        .scanner-viewport {
            width: 100%;
            height: 100%;
        }

        .scanner-viewport video {
            width: 100%;
            height: 100%;
            object-fit: contain;
        }

        .scanner-viewport canvas.drawing,
        .scanner-viewport canvas.drawingBuffer {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            object-fit: contain;
            pointer-events: none;
        }

        .scanner-overlay {
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            pointer-events: none;
            border: 40px solid rgba(0, 0, 0, 0.4);
            box-sizing: border-box;
            z-index: 2;
            display: none;
        }

        .scanner-viewport-container.scanning .scanner-overlay {
            display: block;
        }

        .scanner-laser {
            position: absolute;
            top: 50%;
            left: 10%;
            right: 10%;
            height: 2px;
            background: #ff3b30;
            box-shadow: 0 0 10px #ff3b30;
            animation: scan 2s infinite alternate;
        }

        @keyframes scan {
            0% {
                transform: translateY(-40px);
            }

            100% {
                transform: translateY(40px);
            }
        }

        .scanner-status {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            margin: 0 auto;
            background: rgba(37, 99, 235, 0.1);
            color: var(--text-primary);
            padding: 4px 12px;
            border-radius: var(--radius-md);
            font-size: 13px;
            font-weight: 500;
            backdrop-filter: blur(4px);
            border: 1px solid rgba(37, 99, 235, 0.2);
            transition: all var(--transition-fast);
        }

        [data-theme="light"] .scanner-status {
            color: var(--accent-primary);
        }

        .scanner-status.error {
            background: rgba(255, 59, 48, 0.1);
            color: var(--error);
            border: 1px solid rgba(255, 59, 48, 0.2);
        }

        [data-theme="light"] .scanner-status.error {
            color: var(--error);
        }

        .scanner-status-wrapper {
            display: flex;
            justify-content: center;
            width: 100%;
            margin-bottom: var(--space-md);
        }

        #scanner-modal .modal-content {
            height: auto;
            min-height: 400px;
        }

        #scanner-modal .modal-body {
            padding-bottom: var(--space-xl);
        }

        /* Modal Tabs */
        .modal-tabs {
            display: flex;
            padding: 0 var(--space-xl);
            background: var(--bg-secondary);
            border-bottom: 1px solid var(--border-primary);
            gap: var(--space-md);
            position: sticky;
            top: 0;
            z-index: 10;
        }

        .modal-tab {
            padding: var(--space-md) var(--space-lg);
            background: none;
            border: none;
            border-bottom: 2px solid transparent;
            color: var(--text-secondary);
            font-size: 0.9375rem;
            font-weight: 600;
            cursor: pointer;
            transition: all var(--transition-fast);
            position: relative;
            margin-bottom: -1px;
        }

        .modal-tab:hover {
            color: var(--text-primary);
        }

        .modal-tab.active {
            color: var(--accent-primary);
            border-bottom-color: var(--accent-primary);
        }

        .tab-pane {
            display: none;
            animation: fadeIn var(--transition-smooth);
        }

        .tab-pane.active {
            display: block;
        }

        @keyframes fadeIn {
            from {
                opacity: 0;
                transform: translateY(5px);
            }

            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .modal-body {
            padding: var(--space-xl);
            overflow-y: auto;
            flex: 1;
            padding-bottom: calc(var(--space-xl) + 80px);
            box-sizing: border-box;
        }

        .modal-section {
            margin-bottom: var(--space-2xl);
        }

        .modal-section:last-child {
            margin-bottom: 0;
        }

        .modal-section h3 {
            color: var(--text-primary);
            margin-bottom: var(--space-lg);
        }

        .modal-section .text-body {
            color: var(--text-secondary);
            margin-bottom: var(--space-lg);
            line-height: 1.7;
        }

        /* Barcode Types Grid */
        .barcode-types-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: var(--space-lg);
            margin-top: var(--space-lg);
        }

        .barcode-type-card {
            background: var(--bg-secondary);
            border: 1px solid var(--border-primary);
            border-radius: var(--radius-lg);
            padding: var(--space-lg);
            transition: all var(--transition-fast);
        }

        .barcode-type-card:hover {
            border-color: var(--border-secondary);
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }

        .barcode-type-title {
            color: var(--text-primary);
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: var(--space-sm);
        }

        .barcode-type-desc {
            color: var(--text-secondary);
            font-size: 0.875rem;
            line-height: 1.6;
            margin-bottom: var(--space-md);
        }

        .barcode-type-usage {
            color: var(--text-tertiary);
            font-size: 0.75rem;
            font-style: italic;
            padding: var(--space-sm) var(--space-md);
            background: var(--bg-tertiary);
            border-radius: var(--radius-md);
            border-left: 3px solid var(--accent-primary);
        }

        /* Tips List */
        .tips-list {
            list-style: none;
            padding: 0;
            margin-top: var(--space-lg);
        }

        .tips-list li {
            color: var(--text-secondary);
            margin-bottom: var(--space-md);
            padding: var(--space-md) var(--space-lg);
            background: var(--bg-secondary);
            border-radius: var(--radius-lg);
            border-left: 3px solid var(--accent-secondary);
            line-height: 1.6;
        }

        .tips-list li strong {
            color: var(--text-primary);
        }

        /* Sidebar Footer */
        .sidebar-footer {
            position: sticky;
            bottom: 0;
            z-index: 10;
            display: flex;
            justify-content: center;
            align-items: center;
            padding: 1.25rem 1rem;
            border-top: 1px solid var(--border-primary);
        }

        @supports (backdrop-filter: blur(10px)) {
            .sidebar-footer {
                background: var(--bg-glass);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
            }
        }

        .copyright-badge {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 8px;
            border-radius: 999px;
            transition: background 0.18s ease;
            text-decoration: none;
        }

        .copyright-svg {
            display: block;
            height: 22px;
            width: 185px;
            background-color: var(--text-tertiary);
            opacity: 0.7;
            transition: all 0.18s ease;
            -webkit-mask: url('src/logo/copyright-button.svg') no-repeat center / contain;
            mask: url('src/logo/copyright-button.svg') no-repeat center / contain;
        }

        [data-theme="light"] .copyright-svg {
            opacity: 0.40;
        }

        .copyright-badge:hover .copyright-svg {
            background-color: var(--accent-primary);
            opacity: 1;
        }

        .copyright-badge:hover {
            background: color-mix(in srgb, var(--accent-primary) 8%, transparent);
        }

        .copyright-badge:active .copyright-svg {
            -webkit-mask-image: url('src/logo/copyright-button-on-click.svg');
            mask-image: url('src/logo/copyright-button-on-click.svg');
        }

        /* CTA Button in Modal */
        .modal-cta {
            margin-top: var(--space-2xl);
            padding-top: var(--space-xl);
            border-top: 1px solid var(--border-primary);
            text-align: center;
        }

        .modal-cta-buttons {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: var(--space-md);
            flex-wrap: wrap;
            width: 100%;
        }

        /* Modal Footer (pinned across all tabs) */
        .modal-footer {
            border-top: 1px solid var(--border-primary);
            background: var(--bg-secondary);
            padding: 0;
            position: absolute;
            left: 0;
            right: 0;
            bottom: 0;
            z-index: 30;
            margin: 0;
            min-height: 72px;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .modal-footer .modal-cta-buttons {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: var(--space-md);
            flex-wrap: wrap;
            width: 100%;
            padding: 0 var(--space-md);
        }

        .cta-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: var(--space-sm);
            padding: 0 var(--space-xl);
            background: var(--accent-primary);
            color: white;
            text-decoration: none;
            border-radius: var(--radius-lg);
            font-weight: 600;
            font-size: 0.875rem;
            transition: all var(--transition-fast);
            border: none;
            cursor: pointer;
            height: 40px;
            width: 260px;
        }

        .cta-btn svg {
            width: 14px;
            height: 14px;
        }

        .cta-btn:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-lg);
            background: var(--accent-primary-hover);
        }

        .cta-btn-secondary {
            background: var(--accent-secondary);
        }

        .cta-btn-secondary:hover {
            background: var(--accent-secondary-hover);
        }

        .cta-btn:focus {
            outline: 2px solid var(--accent-primary);
            outline-offset: 2px;
        }

        .cta-btn:active {
            transform: translateY(0);
            box-shadow: var(--shadow-md);
        }

        /* Responsive Modal */
        @media (max-width: 768px) {
            .modal-overlay {
                padding: var(--space-md);
            }

            .modal-content {
                max-height: 95vh;
                border-radius: var(--radius-xl);
            }

            .modal-header {
                padding: var(--space-lg) var(--space-lg) var(--space-md);
            }

            .modal-body {
                padding: var(--space-lg);
            }

            .barcode-types-grid {
                grid-template-columns: 1fr;
                gap: var(--space-md);
            }

            .preview-header-content {
                align-items: flex-start;
            }

            .info-btn {
                width: 40px;
                height: 40px;
            }

            .sidebar-footer {
                padding: 1rem;
            }
        }

        @media (max-width: 480px) {
            .sidebar-footer {
                padding: 0.75rem;
            }
        }

        @media (max-width: 480px) {
            .modal-header {
                padding: var(--space-md);
            }

            .modal-body {
                padding: var(--space-md);
            }

            .modal-section {
                margin-bottom: var(--space-xl);
            }

            .modal-cta-buttons {
                flex-direction: column;
            }

            .cta-btn {
                width: 100%;
                padding: 0 var(--space-md);
                height: 40px;
            }

            .license-benefits {
                grid-template-columns: 1fr;
            }
        }

        /* EULA Text Styling */
        .eula-text {
            background: var(--bg-secondary);
            border: 1px solid var(--border-primary);
            border-radius: var(--radius-lg);
            padding: var(--space-xl);
            color: var(--text-secondary);
            font-size: 0.9375rem;
            line-height: 1.7;
        }

        .eula-text h4 {
            color: var(--text-primary);
            font-size: 1rem;
            font-weight: 600;
            margin-top: var(--space-lg);
            margin-bottom: var(--space-sm);
        }

        .eula-text h4:first-child {
            margin-top: 0;
        }

        .eula-text p {
            margin-bottom: var(--space-md);
        }

        .eula-text p:last-child {
            margin-bottom: 0;
        }

        /* See Also App List */
        .app-list {
            display: flex;
            flex-direction: column;
            gap: var(--space-sm);
        }

        .app-item {
            background: var(--bg-secondary);
            border: 1px solid var(--border-primary);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: all var(--transition-smooth);
        }

        .app-item:hover {
            border-color: var(--border-secondary);
        }

        .app-item-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: var(--space-md) var(--space-lg);
            gap: var(--space-md);
        }

        .app-item-link {
            display: flex;
            align-items: center;
            gap: var(--space-md);
            cursor: pointer;
            transition: opacity var(--transition-fast);
            flex: 1;
            min-width: 0;
        }

        .app-item-link:hover {
            opacity: 0.8;
        }

        .app-item-icon {
            width: 32px;
            height: 32px;
            border-radius: var(--radius-md);
            background: var(--bg-tertiary);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            overflow: hidden;
        }

        .app-item-icon img,
        .app-item-icon svg {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .app-item-name {
            font-weight: 600;
            font-size: 0.9375rem;
            color: var(--text-primary);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .app-item-chevron {
            background: none;
            border: none;
            color: var(--text-tertiary);
            cursor: pointer;
            padding: var(--space-xs);
            border-radius: var(--radius-sm);
            transition: all var(--transition-fast);
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .app-item-chevron:hover {
            background: var(--bg-tertiary);
            color: var(--text-primary);
        }

        .app-item-chevron svg {
            transition: transform var(--transition-smooth);
        }

        .app-item.expanded .app-item-chevron svg {
            transform: rotate(180deg);
        }

        .app-item-description {
            max-height: 0;
            overflow: hidden;
            transition: all var(--transition-smooth);
            padding: 0 var(--space-lg);
            background: var(--bg-tertiary);
            opacity: 0;
            transform: translateY(-5px);
        }

        .app-item.expanded .app-item-description {
            max-height: 200px;
            padding: var(--space-md) var(--space-lg) var(--space-lg);
            opacity: 1;
            transform: translateY(0);
            border-top: 1px solid var(--border-primary);
        }

        .app-item-description p {
            font-size: 0.875rem;
            line-height: 1.5;
            color: var(--text-secondary);
            margin: 0;
        }

        /* Scrollable area for See Also */
        #tab-see-also {
            height: 100%;
            max-height: none;
            min-height: 0;
            overflow-y: auto;
            padding-right: var(--space-xs);
        }

        /* Keyboard Shortcuts Tab */
        .shortcuts-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: var(--space-md);
        }

        .shortcuts-category {
            margin-bottom: var(--space-lg);
        }

        .category-title {
            font-size: 0.75rem;
            font-weight: 600;
            text-transform: uppercase;
            color: var(--text-tertiary);
            margin-bottom: var(--space-sm);
            letter-spacing: 0.05em;
        }

        .shortcut-item {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: var(--space-sm) 0;
            border-bottom: 1px solid var(--border-primary);
        }

        .shortcut-item:last-child {
            border-bottom: none;
        }

        .shortcut-label {
            font-size: 0.875rem;
            color: var(--text-primary);
        }

        .shortcut-keys {
            display: flex;
            gap: var(--space-xs);
            font-family: 'JetBrains Mono', monospace;
            font-size: 0.75rem;
        }

        .key-badge {
            background: var(--bg-tertiary);
            border: 1px solid var(--border-primary);
            border-radius: var(--radius-sm);
            padding: 2px 6px;
            color: var(--text-secondary);
            min-width: 20px;
            text-align: center;
            box-shadow: 0 1px 0 var(--border-secondary);
        }

        /* Custom Select Styles */
        .custom-select-container {
            position: relative;
            width: 100%;
        }

        .custom-select-container.open {
            z-index: 1000;
        }

        .custom-select-trigger {
            position: relative;
            display: flex;
            align-items: center;
            justify-content: space-between;
            cursor: pointer;
            user-select: none;
            background-color: var(--bg-secondary);
        }

        .custom-select-trigger:focus {
            border-color: var(--accent-primary);
            box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.2);
            outline: none;
        }

        .custom-select-trigger::after {
            content: '';
            width: 0.8em;
            height: 0.8em;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%2364748b'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M19 9l-7 7-7-7'%3E%3C/path%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: center;
            background-size: contain;
            transition: transform 0.2s;
        }

        .custom-select-container.open .custom-select-trigger::after {
            transform: rotate(180deg);
        }

        .custom-select-options {
            position: absolute;
            top: 100%;
            left: 0;
            right: 0;
            background-color: var(--bg-elevated);
            border: 1px solid var(--border-primary);
            border-radius: var(--radius-md);
            margin-top: 4px;
            z-index: 1001;
            display: none;
            box-shadow: var(--shadow-lg);
            overflow: hidden;
        }

        .custom-select-container.open .custom-select-options {
            display: block;
            animation: fadeIn 0.15s ease-out;
        }

        .custom-select-search {
            padding: 8px;
            border-bottom: 1px solid var(--border-primary);
            background-color: var(--bg-tertiary);
            position: sticky;
            top: 0;
            display: flex;
            align-items: center;
        }

        .custom-select-search input {
            width: 100%;
            padding: 8px 30px 8px 12px;
            font-size: 14px;
            border: 1px solid var(--border-secondary);
            border-radius: var(--radius-sm);
            background-color: var(--bg-primary);
            color: var(--text-primary);
        }

        .custom-select-search input:focus {
            outline: none;
            border-color: var(--accent-primary);
        }

        .search-clear-btn {
            position: absolute;
            right: 14px;
            background: none;
            border: none;
            color: var(--text-tertiary);
            cursor: pointer;
            padding: 2px;
            display: flex;
            align-items: center;
            justify-content: center;
            opacity: 0;
            pointer-events: none;
            transition: all 0.2s ease;
            border-radius: 50%;
        }

        .search-clear-btn.visible {
            opacity: 1;
            pointer-events: auto;
        }

        .search-clear-btn:hover {
            color: var(--text-primary);
            background-color: var(--bg-tertiary);
        }

        .search-clear-btn svg {
            width: 14px;
            height: 14px;
            stroke-width: 2.5;
        }

        .custom-select-list {
            max-height: 250px;
            overflow-y: auto;
            padding: 4px 0;
        }

        .custom-option {
            padding: 8px 12px;
            cursor: pointer;
            transition: background-color 0.15s;
            color: var(--text-primary);
            font-size: 14px;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .custom-option:hover,
        .custom-option.selected {
            background-color: var(--bg-tertiary);
        }

        .custom-option.selected {
            color: var(--accent-primary);
            font-weight: 500;
        }

        .custom-option.hidden {
            display: none;
        }

        @keyframes fadeIn {
            from {
                opacity: 0;
                transform: translateY(-5px);
            }

            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        /* Sidebar Collapsible Sections */
        .sidebar-section {
            border-bottom: 1px solid var(--border-primary);
        }

        .sidebar-section:last-child {
            border-bottom: none;
        }

        .section-header {
            padding: var(--space-md) var(--space-lg);
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            background: var(--bg-elevated);
            transition: background-color var(--transition-fast);
            user-select: none;
        }

        .section-header:hover {
            background: var(--bg-tertiary);
        }

        .section-title-wrapper {
            display: flex;
            align-items: center;
            gap: var(--space-md);
        }

        .section-header-icon {
            color: var(--accent-primary);
        }

        .section-title {
            font-weight: 600;
            font-size: 0.9375rem;
            color: var(--text-primary);
        }

        .section-icon {
            transition: transform var(--transition-smooth);
            color: var(--text-tertiary);
            transform-origin: center;
            transform-box: fill-box;
        }

        .sidebar-section.active .section-icon {
            transform: rotate(180deg);
            color: var(--text-primary);
        }

        .sidebar-section:not(.active) .section-header:hover .section-icon {
            color: var(--chevron-hover);
        }

        .section-content {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-smooth);
            background: var(--bg-secondary);
        }

        .sidebar-section.active .section-content {
            max-height: 2000px;
            /* Large enough to fit content */
            border-bottom: 1px solid var(--border-primary);
            overflow: visible;
        }

        .section-content-inner {
            padding: var(--space-lg);
        }

        #section-text-controls.qr-controls-disabled .section-content-inner {
            opacity: 0.5;
            filter: saturate(0.2);
        }

        #section-text-controls.qr-controls-disabled .section-content-inner .form-input,
        #section-text-controls.qr-controls-disabled .section-content-inner .form-select,
        #section-text-controls.qr-controls-disabled .section-content-inner .margin-slider,
        #section-text-controls.qr-controls-disabled .section-content-inner .margin-number {
            cursor: not-allowed;
        }

        /* Adjustments for content inside sections */
        .section-content-inner .form-group:last-child {
            margin-bottom: 0;
        }

        /* Move export controls layout styles here if needed, or rely on existing */
        .export-controls-sidebar {
            display: grid;
            gap: var(--space-md);
        }

        .export-action-row {
            display: flex;
            gap: var(--space-sm);
            width: 100%;
        }

        .export-action-row .download-btn {
            flex: 1 1 auto;
            width: auto;
        }

        .copy-icon-btn {
            width: 48px;
            padding: 0;
            flex: 0 0 48px;
            border-radius: var(--radius-lg);
        }

        .btn-outline-secondary {
            background: transparent;
            color: var(--accent-secondary);
            border: 1px solid var(--accent-secondary);
        }

        .btn-outline-secondary:hover:not(:disabled) {
            background: var(--accent-secondary);
            color: white;
            transform: translateY(-1px);
            box-shadow: var(--shadow-md);
        }

        .copy-icon-btn svg {
            width: 18px;
            height: 18px;
        }

        .download-btn .icon-download {
            width: 18px;
            height: 18px;
        }

        .copy-icon-btn .icon-check {
            display: none;
        }

        .copy-icon-btn.is-success .icon-copy {
            display: none;
        }

        .copy-icon-btn.is-success .icon-check {
            display: block;
        }

        /* ==========================================
           PRESETS SECTION
        ========================================== */
        #section-presets.active .section-content {
            max-height: 1400px;
            overflow: visible;
        }

        .presets-inner {
            padding: var(--space-lg);
            display: flex;
            flex-direction: column;
            gap: var(--space-md);
        }

        .save-preset-btn {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: var(--space-sm);
            padding: 10px var(--space-md);
            border-radius: var(--radius-md);
            font-size: 0.875rem;
            font-weight: 500;
            border: none;
            background: var(--accent-primary);
            color: #fff;
            cursor: pointer;
            transition: background var(--transition-fast), opacity var(--transition-fast);
        }

        .save-preset-btn:hover {
            background: var(--accent-primary-hover);
        }

        .save-preset-btn svg {
            flex-shrink: 0;
        }

        .presets-list {
            display: flex;
            flex-direction: column;
            gap: 4px;
            max-height: 240px;
            /* default; overridden by JS */
            overflow-y: auto;
            scrollbar-width: thin;
            scrollbar-color: var(--border-secondary) transparent;
            transition: none;
        }

        /* Suppress hover/active flicker on list items while resizing */
        .presets-list.is-resizing {
            pointer-events: none;
            user-select: none;
        }

        /* Resize handle */
        .presets-resize-handle {
            display: none;
            /* shown by JS when list has items */
            align-items: center;
            justify-content: center;
            height: 14px;
            cursor: ns-resize;
            flex-shrink: 0;
            border-radius: var(--radius-sm);
            position: relative;
            margin-top: -2px;
        }

        .presets-resize-handle::before {
            content: '';
            width: 36px;
            height: 3px;
            border-radius: 99px;
            background: var(--border-secondary);
            transition: background 0.15s ease, width 0.15s ease;
        }

        .presets-resize-handle:hover::before {
            background: var(--accent-primary);
            width: 48px;
        }

        .presets-resize-handle.is-resizing::before {
            background: var(--accent-primary);
            width: 52px;
        }

        .presets-list::-webkit-scrollbar {
            width: 4px;
        }

        .presets-list::-webkit-scrollbar-track {
            background: transparent;
        }

        .presets-list::-webkit-scrollbar-thumb {
            background: var(--border-secondary);
            border-radius: 2px;
        }

        .presets-list::-webkit-scrollbar-thumb:hover {
            background: var(--text-tertiary);
        }

        .preset-item {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 6px 8px;
            border-radius: var(--radius-md);
            border: 1px solid transparent;
            background: var(--bg-tertiary);
            transition: background var(--transition-fast), border-color var(--transition-fast);
            position: relative;
        }

        .preset-item:hover {
            background: var(--bg-elevated);
            border-color: var(--border-primary);
        }

        .preset-item.active-preset {
            background: rgba(59, 130, 246, 0.1);
            border-color: rgba(59, 130, 246, 0.35);
        }

        /* Thumbnail */
        .preset-thumb {
            flex-shrink: 0;
            width: 44px;
            height: 44px;
            border-radius: var(--radius-sm);
            overflow: hidden;
            border: 1.5px solid var(--border-primary);
            background: var(--bg-elevated);
            cursor: pointer;
            transition: border-color 0.15s ease, box-shadow 0.15s ease;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .preset-thumb:hover {
            border-color: var(--accent-primary);
            box-shadow: 0 0 0 2.5px rgba(59, 130, 246, 0.28);
        }

        .preset-thumb img {
            width: 100%;
            height: 100%;
            object-fit: contain;
            display: block;
        }

        .preset-thumb-placeholder {
            color: var(--text-tertiary);
            opacity: 0.4;
        }

        .preset-info {
            flex: 1;
            min-width: 0;
            display: flex;
            flex-direction: column;
            justify-content: center;
            gap: 2px;
        }

        .preset-name {
            font-size: 0.875rem;
            font-weight: 500;
            color: var(--text-primary);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
            cursor: text;
            line-height: 1.3;
        }

        .preset-type-label {
            font-size: 0.6875rem;
            color: var(--text-tertiary);
            text-transform: uppercase;
            letter-spacing: 0.04em;
            line-height: 1;
        }

        .preset-rename-input {
            font-size: 0.875rem;
            font-weight: 500;
            color: var(--text-primary);
            background: var(--bg-primary);
            border: 1px solid var(--accent-primary);
            border-radius: var(--radius-xs);
            padding: 2px 6px;
            outline: none;
            width: 100%;
            font-family: inherit;
            cursor: text;
            user-select: text;
            -webkit-user-select: text;
        }

        .preset-rename-input:focus {
            box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.25);
        }

        .preset-delete-btn {
            flex-shrink: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            width: 24px;
            height: 24px;
            border: none;
            background: transparent;
            border-radius: var(--radius-xs);
            color: var(--text-tertiary);
            cursor: pointer;
            opacity: 0;
            transition: opacity var(--transition-fast), color var(--transition-fast), background var(--transition-fast);
            padding: 0;
        }

        .preset-item:hover .preset-delete-btn,
        .preset-item.active-preset .preset-delete-btn {
            opacity: 1;
        }

        .preset-delete-btn:hover {
            color: var(--error);
            background: rgba(239, 68, 68, 0.12);
        }

        /* Inline delete confirmation */
        .preset-item-confirm {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            gap: var(--space-xs);
            animation: fadeIn 0.15s ease-out;
        }

        .preset-confirm-text {
            font-size: 11px;
            font-weight: 500;
            color: var(--text-secondary);
            word-break: break-word;
            flex: 1;
            padding-right: 4px;
        }

        .preset-confirm-actions {
            display: flex;
            gap: 6px;
            flex-shrink: 0;
        }

        .preset-confirm-actions button {
            padding: 4px 10px;
            font-size: 11px;
            font-weight: 600;
            border-radius: var(--radius-sm);
            cursor: pointer;
            transition: all var(--transition-fast);
        }

        .preset-confirm-actions .btn-confirm-cancel {
            border: 1px solid var(--border-primary);
            background: var(--bg-secondary);
            color: var(--text-secondary);
        }

        .preset-confirm-actions .btn-confirm-cancel:hover {
            background: var(--bg-tertiary);
            border-color: var(--border-secondary);
            color: var(--text-primary);
        }

        .preset-confirm-actions .btn-confirm-delete {
            border: none;
            background: var(--error);
            color: #ffffff;
        }

        .preset-confirm-actions .btn-confirm-delete:hover {
            opacity: 0.9;
        }

        /* Hover preview indicator on the canvas */
        .barcode-preview.preset-hover-active {
            outline: 2px solid rgba(59, 130, 246, 0.4);
            outline-offset: -2px;
        }

        .preset-preview-badge {
            position: absolute;
            top: 16px;
            left: 16px;
            background: rgba(37, 99, 235, 0.1);
            color: var(--text-primary);
            padding: 4px 12px;
            border-radius: var(--radius-md);
            font-size: 13px;
            font-weight: 500;
            display: flex;
            align-items: center;
            gap: 6px;
            z-index: 10;
            pointer-events: none;
            backdrop-filter: blur(4px);
            border: 1px solid rgba(37, 99, 235, 0.2);
            animation: fadeIn 0.2s ease-out;
        }

        [data-theme="light"] .preset-preview-badge {
            color: var(--accent-primary);
        }

        .presets-empty {
            text-align: center;
            font-size: 0.8125rem;
            color: var(--text-tertiary);
            padding: var(--space-md) 0 var(--space-sm);
        }

        /* Search bar */
        .presets-search-wrap {
            position: relative;
            display: flex;
            align-items: center;
        }

        .presets-search-icon {
            position: absolute;
            left: 10px;
            color: var(--text-tertiary);
            pointer-events: none;
            flex-shrink: 0;
        }

        .presets-search-input {
            width: 100%;
            padding: 7px 32px 7px 30px;
            font-size: 0.8125rem;
            font-family: inherit;
            color: var(--text-primary);
            background: var(--bg-tertiary);
            border: 1px solid var(--border-primary);
            border-radius: var(--radius-sm);
            outline: none;
            transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
            user-select: text;
            -webkit-user-select: text;
            cursor: text;
        }

        .presets-search-input::placeholder {
            color: var(--text-tertiary);
        }

        .presets-search-input:focus {
            border-color: var(--border-focus);
            box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.18);
        }

        .presets-search-clear {
            position: absolute;
            right: 7px;
            display: flex;
            align-items: center;
            justify-content: center;
            width: 20px;
            height: 20px;
            border: none;
            background: transparent;
            border-radius: var(--radius-xs);
            color: var(--text-tertiary);
            cursor: pointer;
            padding: 0;
            opacity: 0;
            transform: scale(0.7);
            transition: opacity 0.18s ease, transform 0.18s ease, color var(--transition-fast);
            pointer-events: none;
        }

        .presets-search-clear.visible {
            opacity: 1;
            transform: scale(1);
            pointer-events: auto;
        }

        .presets-search-clear:hover {
            color: var(--text-primary);
            background: var(--bg-elevated);
        }